'Nightline' Daily Line, March 20: Obama's Daughter Safe after Mexico Quake

Forget spring it's like summertime outside in New York City. We're expected to hit 80 degrees by Thursday. 

10:44 p.m. ET: Less than an hour to air… tune in tonight for gas gurus, Hunger Games hysteria, and the backwoods millionaires of Duck Dynasty.

 9:02 p.m. ET: Based on our analysis of the exit polls and the vote in so far, ABC News projects that Romney will win the Illinois primary.  Santorum will be second.

7:08 p.m. ET: "Nightline" anchor Bill Weir tweets:

5:07 p.m. ET: So how about a little help from our friends? GasBuddy.com asks users to help track gas prices in their area so people can find the cheapest gas. The guys at GasBuddy.com offered some other tips for filling up your tank for less HERE.

3:11 p.m. ET: White House announces that Malia Obama, the president's eldest daughter,  is safe and out of harm's way following the earthquake in Mexico. She was there on vacation.

2:55 p.m. ET: The 7.9 earthquake epicenter is in Guerrero state, 115 miles from Acapulco. Initial reports are that there was no major damage, but people were worried about aftershocks and buildings collapsing.

2:12 p.m. ET: Word of a strong earthquake in Mexico City…more to come…

2:01 p.m. ET: Oh Glory-ious day. Daily Beast reports that Beyonce has announced a new round of concert tours - the first since she gave birth to her and Jay-Z's daughter, Blue Ivy Carter, in January.

12:35 p.m. ET:  Talk about being attached to your cell phone, this just seems bizarre.

Finnish cell phone maker Nokia has filed a  U.S. patent application for a magnetic vibrating tattoo that could wirelessly connect to a mobile device and alert users of phone calls, texts and battery status-all via vibration.

11:20 a.m. ET: ABC News has learned that the Trayvon Martin case goes to the grand jury to hear evidence on April 10.

10:27 a.m. ET: "HUNGER GAMES"!!!

Credit: ABC News

"Nightline" producer Nikki Battiste sat down with "Hunger Games" star Liam Hemsworth this morning to talk about the upcoming film. Battiste said Hemsworth is charming, polite and surprisingly down-to-earth for a young man who is shooting to super-stardom overnight.  During the interview, hundreds of screaming fans - mostly young girls - waited outside ABC News' Times Square studios for a glimpse of the latest teen heartthrob.  The "Hunger Games" star, playing the character Gale, chatted about enjoying trips to New York City simply for some good pizza and his love for his hometown Melbourne, Australia.

Watch the full interview with Liam Hemsworth and co-star Josh Hutcherson on "Nightline," Thursday, March 22.

9:20 a.m. ET:Another piece of the Amelia Earhart puzzle might be revealed today.

A renewed effort to determine  what happened to aviator Amelia Earhart's plane when it disappeared over the Pacific 75 years ago is expected to be announced today as a recently discovered photo taken months after she vanished is believed to show her plane's landing gear.

7:05 a.m. ET: More information is seeping out about self-proclaimed neighborhood watchman George Zimmerman who killed Trayvon Martin, a high school student in Florida.

According to the 16-year-old girl whose call logs show she was on the phone with Martin, 17, moments before he was killed, he was being hounded by a strange man on a cellphone who ran after him and confronted him.

U.S. Justice Department's Civil Rights Division and the FBI also announced overnight that they plan to open an investigation into the case.